The Nineteenth Byte

Redwolf Programs

00:14

Can someone explain why I have both nodejs and node installed on my server lol

And I just checked and the version nodejs uses is like two years old...I wonder if I can uninstall it without breaking everything

Seems like you can, I just ran sudo apt remove nodejs, nothing has caught on fire and node still works.

Razetime

01:00

@RedwolfPrograms hopefully not a timebomb

@Neil oh no where

@Anush fastest code is rare anywhere else because a person needs to time stuff

largely because there's a pretty big spread of languages used

Lyxal

01:21

@RedwolfPrograms *yet

If I were you, I'd start running while you have the chance

pppery

04:11

15

Q: On editing somebody else's off-topic question to make it on-topic without the owner's word

Recently a user joined the site asking a question that was an equivalent of the routinely closed, "hey guys please solve my homework for me". Here's the specific question I'm talking about. An existing user then proceeded to edit the question to make it more fitted to our site, and I voted to reo...

discussion

Anush

05:52

@Razetime ccgc FTW again :)

ASCII-only

06:06

@Anush coding challenges and garbage collection

Lyxal

06:27

@Anush code colf and goding challenges

2

pxeger

07:52

Any opinions on this: codegolf.meta.stackexchange.com/a/20613/97857?

New Main Posts

1

Q: Draw an ASCII hexagon of side length n

Given a positive integer \$n\$ output an ASCII hexagon with diagonal side length \$n\$, as pictured (note there are \$2n\$ _ characters on the top edge) Examples: \$n = 1\$ __ / \ \__/ \$n = 2\$ ____ / \ / \ \ / \____/ \$n = 5\$ __________ / \ / ...

code-golf ascii-art

fomin

09:53

hi @wizzwizz4

and all

Anush

@Lyxal that's cruel!

(and quite funny)

the default.

"coding and code golf challenges"

Anush

thanks

Lyxal

@Anush how so?

Anush

mocking my mistake..but I don't mind

Lyxal

10:01

Even though I wasnt the first to do so

🤔

Anush

he started it :)

you can make up by telling me how I can grep a word list for 5 letter words

Lyxal

Looks like I ain't making anything up to you

I haven't the foggiest what grep is

Anush

ah ok.. how can you use a computer and not know what grep is?

Windows only?

Lyxal

Golfing languages don't lend themselves to grep

Anush

grep -E '^[[:alpha:]]{4}$' words it seems

the default.

10:05

my best guess for grep is "GNU Regular Expression Program"

Anush

@thedefault. another non-linux user?

the default.

no, I'm a linux user

wizzwizz4

@Anush topanswers.xyz/codegolf has fastest code, iirc.

Anush

you must use grep then surely

@wizzwizz4 true... but they have weeks between posts

it's very low throughput

I should try a post there and see how it goes

New Main Posts

-2

Q: Reccomendations for programming for grade 9 student

What is the material or path to learning competitive programming? How does one in the grade-9 start ? What books are recommended

programming-puzzle

Fatalize

10:08

@UnrelatedString Surprised you're still using Brachylog after all these months of me not updating anything :)

Anush

now I want a poll for how many people have used grep in the last week in the chatroom

Unrelated String

@Fatalize :)

Fatalize

-GLaDOS voice- It's been a long time

Were you the one wanting to implement a declarative golfing language? Or am I thinking of someone else

Unrelated String

i'm still working on it lmao

it's at like the third complete overhaul of the concept

Fatalize

LOL

Unrelated String

10:14

at this point it's just Jelly with backtracking, if Jelly with backtracking was a single file containing nothing but a verbose tokenizer

Fatalize

I think ais523 also had plans to do this but I think he's too much of a perfectionist like you

Unrelated String

yep

Fatalize

This is my secret to implementing Brachylog: I just went for it so loads of things are bad in it

Unrelated String

lol

Fatalize

but at least there'ssomething

My biggest "regret" is definitely the way arguments are passed in predicates

Unrelated String

10:16

and it also helps that you mostly overhauled it to go from ASCII to code page after you already had experience with the ASCII version

that way you could get some things right the first time... the second time

Fatalize

It looks good and is terse when it's a erlation between only 2 variables, but when there are more it's so annoying to have to use lists

Unrelated String

yeah

Fatalize

But I couldn't think of a simple short solution for it so I just didn't bother changing it

The ASCII version was definitely a monstrosity, both in terms of the language itself, and the implementation of the interpreter

Re-implementing everything in Prolog with a cutom code page was definitely the best decision

Unrelated String

the whole single-list-variable paradigm does have some nice consequences like + doing double duty conceptually as add two numbers and as sum a list

Fatalize

Yeah in some cases it's good, in others it's terrible

Unrelated String

10:20

yeah

Fatalize

Actually not that obvious to find a terser yet readable solution to this

That discussion reminded me of that satisfying Brachylog commit message

Unrelated String

ahah nice

...the first thing I thought of before I clicked the link was the one time I commented out an entire file by accident

Fatalize

Oh I didn't even remember that I reimplemented it in Prolog befoer changing the code page

Anush

any python people know how to sample from a random distribution? I have a Counter which gives counts for every letter and I want to sample according to that distribution

the default.

isn't that random.choices with weights?

Unrelated String

10:26

yeah sounds like it

Fatalize

the Brachylog intro vid has almost 1k views wtf

Anush

@thedefault. oh that sounds good. thanks

Fatalize

it's not even up-to-date

Unrelated String

I'm not sure I ever even watched it

Anush

hmm.. I don't think random choice allows weights does it?

the default.

10:28

yes, I fixed that, only choices accepts them, according to the documentation

Anush

oh it does

that must be newish

3.6 it seems.. not that new

Unrelated String

i'm on python 3.6 and choices accepts

oh it was added literally in 3.6

Anush

I am writing some simple code and it's very tempting to pose each part as a CMC so I can see how terrible I am at coding :)

wizzwizz4

@Anush Implementation by committee; I don't see the problem with that.

Anush

:)

Neil

10:38

CMC: Sort a list of strings matching ^[A-Z]+$ into Excel column name order e.g. ["AA", "Z"] becomes ["Z", "AA"]

the default.

so we sort first by length, then alphabetically?

wizzwizz4

@Neil l.sort(key=lambda s:(len(s),s))

ASCII-only

@wizzwizz4 smh that's not golfed

Fatalize

Brachylog, 2 bytes: lᵒ

wizzwizz4

@ASCII-only It's Python; i doubt you can beat that.

Except by 1 character.

Happy now? :-p

Fatalize

10:42

(first Brachylog thing I wrote in months)

ASCII-only

upvoted

Anush

10:57

@wizzwizz4 I don't see fastest-code at topanswers.xyz/tags?community=codegolf

Lyxal

@Fatalize what's that button on TIO in the video next to the share button?

I'm not sure what it is.

Cause it ain't there no nore

wizzwizz4

@Anush Look at the challenge types. There's a speed competition there. (Note that code golf is also not in the list of tags.)

Anush

@wizzwizz4 oh cool

Lyxal

11:15

Bonobo.

Razetime

funny deleted post for 10k gang

Unrelated String

i remember i hit the old threshold for seeing deleted posts within like a week or two of cg&cc leaving beta and increasing its thresholds

Anush

CMC print zero, one, two, three ... nine. That is the names of the numbers from zero to nine

Lyxal

11:30

@Razetime gosh darn that stupid y combinator

Unrelated String

leaving the Brachylog video on by accident while I looked for the button in TIO's commit history reminded me, it's always strange to run into a Brachylog answer that was written after the jump from ASCII but before ; replaced : as the pairing operator

Razetime

@Anush Every golfing language, 58 bytes: "zero, one, two, three, four, five, six, seven, eight, nine"

Anush

@Razetime that's no good :)

Unrelated String

@Razetime you forgot Jelly's special quote characters

Razetime

works in most of em

Unrelated String

11:32

yeah

Anush

so what is the smallest range where you can do something cleverer?

2

the default.

Mathematica, IntegerName@Range[0,9], of course

Anush

zero... twenty?

@thedefault. very nice :)

Unrelated String

@Anush doubtful

Anush

@UnrelatedString zero... hundred?

Razetime

11:33

hundred, yes

the default.

wait, do we need to separate them with commas, or can we just output a list?

Unrelated String

yeah sounds right

Anush

@thedefault. just output them

Razetime

but thats too big for CMC

Lyxal

@Razetime almost every golfing language

Anush

11:34

I want to know the smallest interesting range :)

Lyxal

Smh

Anush

Smh?

Lyxal

Shaking my head at razetime

Unrelated String

anyways for the original range, Jelly, 25 bytes: “¢¤Ƙƒ⁺6j¹;Ċ-ḶṃżṃgɼṘƑUẏ{»

Anush

@UnrelatedString that's a good improvement!

Unrelated String

11:35

it's always tempting to use the built in string list syntax but it's never as good for dictionary compression as just compressing spaces in

Lyxal

@Anush Try it online!

05AB1E 64 bytes

Prints the exact message you told me to print

"zero, one, two, three ... "“¥Š“". That "“€ˆ€€Œî€‚€€Žµ€š¡×€„¥Š“J

the default.

for 05ab1e the shortest interesting range is zero, is that interesting? (“¡×)

Anush

@Lyxal :)

I assume this must have been a challenge already at some point

Unrelated String

there is a challenge for taking a number as input and outputting it in english within some similarly limited range

Anush

hmm. then I really do need to work out what an interesting range is

I guess one to ninety-nine?

Lyxal

11:40

sixty-nine to four hundred and twenty

Ha got'em

I'm just so hilarious

Two funny numbers in a single message

Unrelated String

honestly 16 to 99 could be an interesting choice of range

Lyxal

This room has the best bookmarks

Neil

11:55

@Anush Charcoal, 39 bytes: ⪫⪪”&⌈⁰⁺⭆cE…+≕✳>⁷^▶Ｏ↑l�θ⧴↙;≔fCＱＦ…∧³”a¦,

Anush

12:06

@Neil very nice!

ASCII-only

12:19

@UnrelatedString lisp, 20 bytes

the default.

I'm surprised the numbers from 0 to 10 don't contain the letter a (and also that joining them with a is shorter than joining them with a space)

Anush

challenge posted

Anush

12:36

sadly already existed as a challenge

Razetime

figured as much

caird coinheringaahing

12:57

@Lyxal didn't screw up that badly

Fatalize

@Lyxal I honestly don't remember at all

Unrelated String

all the icon tells me is that the icon reminds me of the ubuntu logo

also I tried wayback machine and it did not exactly work

Neil

13:17

@thedefault. Charcoal has special compression if the string contains only characters from one of uppercase; lowercase; digits; space and newline, but if you have characters from more than one set the compression isn't as good

Unrelated String

...okay, somehow I got the language list to load, but the snapshot I picked was after the button disappeared

tried the very first snapshot

looks like the mystery button is for "Community"

web.archive.org/web/20170211232933/https://tio.run

user

15:45

Regarding categories for "Best of" for 2020, are there categories involving multiple people?

caird coinheringaahing

@user We've had "Best Collaborative Effort" before, but it always has the issue of "how do we award the bounty to multiple people?"

user

There's no need to award a bounty, though, is there?

caird coinheringaahing

That's usually what the reward/prize is for winning a category

CMC: Given the name of a positive integer (one, seven, ten etc.) output if it's odd or even

rak1507

format for the first ~1000?

is there an 'and' in 'one hundred and three' for example

user

@cairdcoinheringaahing I thought it was just to show people cool answers and stuff. And the people involved would probably get upvotes.

caird coinheringaahing

15:49

@rak1507 You can decide the format, so long as it's consistent and is obviously "the name" of it

@user Nah, see the bounties bit at the end of the question? That's cause normally we award +500 rep bounties to the winners

user

May I ask what happened to "Best Collaborative Effort"? I can't find it

caird coinheringaahing

8

A: Best of PPCG 2019 — Call for Categories

Most Collaborative Answer goes to one that incorporates significant ideas from as many users as possible

user

@cairdcoinheringaahing Oh, I see. Perhaps it could be split between the users (on different answers of theirs)?

caird coinheringaahing

@user Potentially. If you want to (re)post it, go ahead, just be prepared to have that conversation about the fairest way to reward those involved

user

@cairdcoinheringaahing Thanks!

Looks like it didn't go anywhere, unfortunately

caird coinheringaahing

15:53

Man, the Winter Bash stats always surprise me as to just how many people participate

@user Yeah, that's another issue, is that we don't really "collaborate" with answers on the site

Like, if I suggest a golf, I wouldn't think of that as "collaborating" with the OP

user

@cairdcoinheringaahing Eh, what the heck, I'll repost it and let the community vote on it

caird coinheringaahing

@user Sounds good to me. Worst case scenario is that it doesn't move into the nominations post :)

user

I wasn't exactly thinking of collaboration really, anything with multiple people golfing. I saw three users golfing in R going back and forth once, which is what made me think of this

rak1507

@cairdcoinheringaahing I think I have a 56/65 (chars/bytes) in python up to a million

but I'm not sure

caird coinheringaahing

We've currently got 10 answers on the Best of CGCC, and more are potentially incoming. Currently, the bounties offered is unlikely to cover that with 500 to each winner. If you're willing to give up some of your rep to reward the best posts from this year, please reply to this message, comment on the post or edit yourself into the meta question.

6

Can we get a couple of stars on ^ so it sticks around for a little bit?

rak1507

16:02

tio.run/##K6gsycjPM7YoKPr/…

the default.

@cairdcoinheringaahing Mathematica: OddQ@*Interpreter["SemanticNumber"]

rak1507

ffs :')

the default.

(outputs inverted, you can use EvenQ if you don't want that)

caird coinheringaahing

@rak1507 What's the magic string? How'd you find that?

@thedefault. @* is Mathematica's compose function right?

the default.

Yes

rak1507

16:04

it's chr(sum(map(ord,'one'))), chr(..., 'three')... etc

Redwolf Programs

@cairdcoinheringaahing I'd be willing to give 500 rep

caird coinheringaahing

@RedwolfPrograms Edited in, thanks (cc @user) :)

Redwolf Programs

Also I like that yours says +500, as if you were considering giving -500 :p

caird coinheringaahing

I've always formatting rep gains/loses as + or - :P

I see an accept as +15 to the answerer and +2 to me for example :P

user

We now have 3000+ rep to give away!

caird coinheringaahing

16:08

@user Well, 2500 and whatever HN offers :)

> Adám Offering 1E4 rep

From last year o.O

user

@cairdcoinheringaahing I took "good amount" to mean 500+

It'd be great if someone offered 10000 rep though

caird coinheringaahing

@user Agreed, ~~but I don't want to pressure anyone specific to offer bounties, I'd rather people be happy to reward instead of feeling like they "should"~~

CMC: General version of this: Given n, b, d, output the number of integers in [1...n] when end in d in base b

The linked question is b = 10, d = 2

Redwolf Programs

If there's more rep offered that needed, will we just go in descending order by reputation?

user

@cairdcoinheringaahing Does the strikethrough mean you do want to pressure people? :o

2

caird coinheringaahing

@RedwolfPrograms I'm planning on taking the top N categories, such that each category would result in a +500 bounty to the winner

So currently, with an assumed +3000 reward "pool", we'd have 6 categories, chosen by votes on the category page

Which is why I'd like as much rep offered as possible

@user ...no shifty glance

Redwolf Programs

16:21

Did we decide it was best to do most underappreciated as a best of category or a separate thing?

Adám

@cairdcoinheringaahing I can't, this year, though. I ran out of rep meanwhile.

caird coinheringaahing

@Adám Oh damn, I didn't realise we were so close in rep

Didn't you hit ~40k at one point?

Adám

Anush

hmm... so python coding problem. I have a list of words of the same length (say length 8). I want to make a probability distribution for the symbols at each index. So 8 probability distributions. What's a nice compact way of doing that?

caird coinheringaahing

@Adám NGL if/when I reach that level of rep (i.e. safely clear of 25k) I'm going to find something to give it away for

the default.

16:24

@Anush I'd transpose the character array and process rows (note: I'm not sure that'd be a good idea)

caird coinheringaahing

As long as I can see site analytics, I don't really care how much rep I have

Anush

@thedefault. hmm.. so make the list of strings a list of lists and then transpose that? I don't know if it can be a numpy array

rak1507

There must be an 'nth digit of champernowne's constant' challenge right?

Anush

[collections.Counter(word[index] for word in words) for index in range(8)] ?

caird coinheringaahing

@rak1507 Maybe not

4 bytes in Jelly tho

rak1507

16:29

yeah, just surprised me there wasn't one

Anush

and it even works :)

caird coinheringaahing

@cairdcoinheringaahing 5 bytes

the default.

I feel like my 5-byte Jelly solution should be 3 bytes: RVṾị@; can it be shortened?

caird coinheringaahing

@thedefault. I used DF instead of VṾ, but otherwise I don't think it can :/

Ugh, when you have to add 66% to your byte count because the question requires proper handling of 0

Redwolf Programs

#cancelzero

user

16:52

@cairdcoinheringaahing Care to share the link to this question you mentioned? I'd love to have a go at it as well

caird coinheringaahing

@user This. See Erik's Jelly answer (I had RVw)

user

Thanks! I didn't realize that was an old comment

caird coinheringaahing

@user Wait, I linked to the wrong question

Thought you were replying to the 66% comment :/

Gimme a second to find that one

user

Oh ok, that confused me a bit :)

caird coinheringaahing

Here we go

Anush

16:57

@wizzwizz4 hi

user

@cairdcoinheringaahing Thanks!

caird coinheringaahing

One of my most "how to abuse Jelly" answers ever :P

user

Abusing things is the true Code Golf way, after all

caird coinheringaahing

Yeah :P The overuse of the register was definitely "non-Jelly" programming :P

@user Just an FYI, I think my initial answer was around ~70/80 bytes, before I started the explanation and golfing, so have fun :P

user

17:32

70 bytes for Jelly? Great, that's going to be at least 500 bytes for Scala

caird coinheringaahing

18:50

Any feedback?

user

21:05

Anyone know how you paste a whole block of Latex into an answer? All I know right now is \$

wizzwizz4

@user $$

user

@wizzwizz4 Ah, thanks!

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